α,β-Unsaturated aldehyde 2 prepared from tri-O-acetyl-D-glucal was acetalated and benzoylated to give α,β-unsaturated acetal 6. Hydrogenation of the double bond followed by methanolysis resulted in methyl 2,3-dideoxyfuranosyl glycoside 8 which was used for nucleoside coupling with silylated N 6-isobutyrylcytosine and silylated thymine. Protected 3-azido-2,3-dideoxy-arabino-furanose 26 was prepared by 1,4-addition of hydrazoic acid to disilylated α,β-unsaturated aldehyde 24 followed by acetylation. Compound 26 was used for the preparation of 3′-azido-2′,3′-dideoxy-D-arabino-hexofuranosyl nucleosides 28 and 29.
由三-O-乙酰基-
D-葡萄糖制备的α,β-不饱和醛2经
缩醛化和苯甲酰化得到α,β-不饱和
缩醛6。双键氢化,随后
甲醇解产生甲基2,3-二脱氧
呋喃糖基糖苷8,其用于与甲
硅烷基化的N 6-异丁酰
胞嘧啶和甲
硅烷基化的胸腺
嘧啶进行核苷偶联。 受保护的3-
叠氮基-2,3-二脱氧-阿拉伯-
呋喃糖26 是通过将
叠氮酸1,4-加成到二甲
硅烷基化的α,β-不饱和醛24 上然后乙酰化来制备的。化合物26用于制备3'-
叠氮基-2',3'-二脱氧-D-阿拉伯-
呋喃己糖核苷28和29。